Vulnerability in Cisco 4321 Integrated Services Router
CVE-2018-0177
A vulnerability in the IP Version 4 (IPv4) processing code of Cisco IOS XE Software running on Cisco Catalyst 3850 and Cisco Catalyst 3650 Series Switches could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain IPv4 packets. An attacker could exploit this vulnerability by sending specific IPv4 packets to an IPv4 address on an affected device. A successful exploit could allow the attacker to cause high CPU utilization, traceback messages, or a reload of the affected device that leads to a DoS condition. If the switch does not reboot when under attack, it would require manual intervention to reload the device. This vulnerability affects Cisco Catalyst 3850 and Cisco Catalyst 3650 Series Switches that are running Cisco IOS XE Software Release 16.1.1 or later, until the first fixed release, and are configured with an IPv4 address. Cisco Bug IDs: CSCvd80714.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.038 (90.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.038 · newest: 0.038 · change: 0.000
Affected products
- Cisco 4321 Integrated Services Router
- Cisco 4331 Integrated Services Router
- Cisco 4351 Integrated Services Router
- Cisco 4431 Integrated Services Router
- Cisco 4451-X Integrated Services Router
- Cisco Asr 1000 Series Route Processor \(Rp2\)
- Cisco Asr 1000 Series Route Processor \(Rp3\)
- Cisco Asr 1001-Hx
- Cisco Asr 1001-X
- Cisco Asr 1002-Hx
Weakness classification (CWE)
References
- www.securityfocus.com/bid/103563 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328… (Vendor Advisory)
- www.securitytracker.com/id/1040588 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-0177?
- CVE-2018-0177 is a high-severity vulnerability in Cisco 4321 Integrated Services Router, classified under CWE-19. CVSS score: 7.5/10. Published 2018-03-28.
- How severe is CVE-2018-0177?
- High severity. CVSS v3 base score is 7.5 out of 10.